SAN JOSE, Calif. (Alex Savidge/KTVU) - The owner of a liquor store in San Jose was killed late Monday night and his brother told KTVU the gunman came in demanding money, waking up his brother who was taking a nap on the floor.

On Tuesday, Hao Ly told KTVU that his brother, 57-year-old Hieu "Charlie" Ly, a father of four, was killed about 11 p.m. at Jim's Liquor Store in the 2800 block of Quimby Road. He said that the armed gunman came in demanding money, and his brother refused. "My brother said no, and he shot him somewhere in the chest," Hao Ly said, adding that the robber probably only made off with $100 or $200.

"Why did he kill him in cold blood?" Hoa Ly askedd.

San Jose police officer Albert Morales said details were still sketchy, but officers responded to the 2800 block of Quimby Road about 11 p.m. Monday after hearing someone was injured. Morales did not mention anything about a robbery or a motive.

When police arrived, officers found a man suffering from a gunshot wound. He was pronounced dead and the suspect is at large.

Ly's relatives told KTVU that Charlie Ly and his wife, who had owned the liquor store for about 10 years and often worked seven days a week, were working together when a masked man entered the shop and demanded money. Charlie Ly was sleeping on the floor and woke up when the gunman burst in, relatives said.

The store has been robbed in the past, relatives said.

On Tuesday morning, several officers were seen shining a flashlight into a white car in the strip mall where the liquor store is located, looking for evidence in the strip mall where the store is located. The store has surveillance video and police also will be reviewing that.